Let D be the solid whose base lies on the xy plane and is bounded by the graphs of y = 2x and y = 3 – x, and whose cross sections perpendicular to the x axis are square. Find the volume V of D.

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Q: (c) Show that if g o f is onto then g must be onto.

A: Solution:-

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Q: In how many ways can 5 people be seated in a circular table?

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A: topic- quadrilaterals

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A: the standard equation of the ellipse is  x-h2a2+y-k2b2=1

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Angles

In mathematics, angles constitute a very important part. Just like the concept of lines, an angle is a necessary figure that is used for measurement. How do you define its formation? It is formed when two or more lines meet at a point. The point at which two or more lines meet is known as the vertex. When the lines get inclined at this point, they do form various angles. Angles are measured from the vertex in terms of degrees.